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   MSGID:  c8246b67   
   PID: SoupGate-Win32 v1.05   
   In February I mentioned getting an Argon NEO 5 NVMe case for my Pi 5.   
      
   It was slightly fiddly to put it all together, but not really outside   
   expectations. Linux was able to see my SSD without any trouble.   
      
   However I have not been able to get the Pi to boot directly from the   
   SSD. It can see there’s something there but can’t interpret it properly;   
   the diagnostic output (copy-typed) is:   
      
     NVME on 0   
     Trying partition: 0   
     Unable to read partition as FAT   
     type: 32 lba: 0 '' '            ' clusters 0 (0)   
     Trying partition: 0   
     Unable to read partition as FAT   
     type: 32 lba: 0 '' '            ' clusters 0 (0)   
     NVME off   
     Timeout 00000000 3c303020 00000000 00000000   
     nvme: error 8   
     Failed to open device: 'nvme'   
      
   (Why is there ASCII ‘ 00<’ in the timeout message?)   
      
   My solution was to boot from the SD card but to configure it (via   
   cmdline.txt and /etc/fstab) to mount the root system from the SSD. This   
   works (and it’s not like the performance & capacity of the firmware   
   partition is very important) though there are now two points of failure.   
      
   My interpretation of all this is that the hardware is connecting the SSD   
   perfectly well, and the Linux kernel talks to it correctly, but the boot   
   loader is failing to communicate properly with the SSD.   
      
   Based on forum posts there are many compatibility issues between the Pi   
   5 and NVMe devices, so anyone planning to buy one should do their   
   research first.   
      
   In my case the SSD is a Crucial CT1000P5SSD8; I had it left over from a   
   decommissioned PC.   
      
   --   
   https://www.greenend.org.uk/rjk/   
      
   --- SoupGate-Win32 v1.05   
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